Cita APA (7th ed.)

Hull , T. E., & By , D.. (1970). Computers and problem solving. Addison Wesley.

Cita Chicago (17th ed.)

Hull , T. E., i Day By. Computers and Problem Solving. Canada: Addison Wesley, 1970.

Cita MLA (9th ed.)

Hull , T. E., i Day By. Computers and Problem Solving. Addison Wesley, 1970.